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Contraction Timer

Tap Start when a contraction begins and Stop when it ends. The timer logs each contraction's duration and the interval until the next one starts, so you can see whether labor is following the 5-1-1 pattern. Informational only — follow your provider's guidance.

Timer

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Interval to Next
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The 5-1-1 Rule

A widely taught signal that labor is active and it's time to head to the hospital:

Contractions 5 minutes apart  +  lasting 1 minute  +  for 1 hour

Early labor is often irregular and easy to dismiss; active labor settles into a steady, strengthening rhythm. Timing several contractions shows the trend. Every pregnancy is different, so always defer to your provider's specific instructions.

Braxton Hicks vs. Real Contractions

Braxton Hicks ("practice" contractions) are typically irregular, weak, and fade with rest or hydration. True labor contractions get closer together, longer, and stronger and don't stop. If they follow 5-1-1 for an hour, that's the classic active-labor cue.

Frequently Asked Questions

What is the 5-1-1 rule?

Contractions 5 min apart, lasting 1 min, for 1 hour → time to go in.

Braxton Hicks vs real contractions?

Braxton Hicks are irregular and fade; real ones get regular, longer, stronger.

How do I time a contraction?

Start at the tightening, stop at the end for duration; the gap to the next start is the interval.

When call regardless of timing?

Water breaking, bleeding, reduced movement, or preterm — call your provider at once.

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BuildFormulas Family Health Team
Pregnancy & Infant Care Guides

The BuildFormulas Family Health Team provides educational calculators for pregnancy and infant care. These tools are informational only and not a substitute for professional medical advice.

Reviewed by BuildFormulas Editorial Review Board, Editorial Review
Last updated: August 2026